empty inbox

i found out just now that all of my email messages i have in my justicemail account have been erased/deleted. i dont know if it was because of of an upgrade or some glitch or some temporary shit. what i do know is that my emails, which dates back up to 2002 or maybe earlier, are gone. wasnt able to back up the messages because i didnt know this will happen. nor was i aware of any notification that the emails will be erased. its really irritating because it was my primary email address before i switched to yahoomail (meaning, i have some important messages in that justicemail account). and before justicemail, my primary email address was edsamail. now for the edsamail account, i wasnt able to back up the messages because my hard disk back then was beyond repair, cant be reformatted. edsamail isnt really an online account so the messages are stored in the hard disk. and im very much a newbie in the tech world then so i dont know what to expect. point is, i didnt feel a need to back up the messages in my justicemail account since its an online account. until i receive a notification that the email account will be closed or that a system upgrade might erase the emails in the inbox and outbox, i will not make a back-up of the messages. this month is just so unpredictable. years worth of stored emails, gone. i check that email account everyday, and i didnt notice that there's a notification that such a thing will happen. now, if the same thing happens to my primary yahoomail account and my primary gmail account, i think its a clear manifestation that august is here to make my life a living hell.